Stapler



FIG. 1 is a left side perspective view of a stapler;

FIG. 2 is a right side perspective view thereof:

FIG. 3 is a left-side elevational view thereof:

FIG. 4 is a top elevational view thereof;

FIG. 5 is a right-side elevational view thereof;

FIG. 6 is a bottom elevational view thereof;

FIG. 7 is a front elevational view thereof; and,

FIG. 8 is a rear elevational view thereof.

The broken lines shown in the drawings illustrate environmental matter and form no part of the claimed design. 

The ornamental design for a stapler, as shown and described. 